Boiler connection



April 29, 1930. .v. wlL-HELMI BILER QONNECTION Original Filed Dec. 4 1926 Patented Apr. 29, 1930 VALENTIN WILHELMI, OF MAYWOOD, NEW JERSEY BOILER CONNECTION Original application led December 4,

This invention relates to boiler connections suchv as shownand vdescribed in my co-pending application filed December 4th, 1926, Serial No. 152,567,0fwhich this application 5 isa division, and more particularly to the connecting elements used on ydomestic hot water boilers by which the hot and cold water pipes are attached thereto.

' Heretofore in the production ofboilers for l Vj Vdomestic purposes,it has been customary to `use galvani'zed'iron for the boiler body or shell. Bosses were welded at desirable points thereon and were subsequently drilled and Y tapped forthe Vintroduction of the piping connections. Such boilers have proven highly satisfactory for the purpose, butowing to the' iron used iny their construction, such boilers need frequent draining to remove rust particles therefrom.` Asa consequence, cop- '20 per boilers have, been rfrequently substituted in the better class of installations, but owing tothe nature of the material, the welding of the bosses thereon could not be accomplished andthrcads of vsuflicient length to form a leak proof joint could not vbe produced.

' 1lt is the primary'ob'ject of this invention to provide a connection between a boiler and the V.plumbing Vsystem which will permit of -the use Ofc'jpperj for the body of the boiler, by reinforcing the boiler shell at the points of introduction of the connecting pipes and at the same time facilitate the production of threads of sufficient length to produce a leak proof joint.

A feature of the invention is the annular flange formed on the boiler shell which enters an annular groove in the spud clamping element to center the spud relative to the opening in the shell and also serves as a seal to 40 prevent the escape of the water.

Another feature of the invention is the annular cavity or channel surrounding the spud for the reception of the spud flange and the solder by which any space between the j spud and shell is completely sealed and the entire area reinforced.

With the above and Vother objects in view which will become more apparent as the description proceeds, one embodiment of the y invention consists in the novel cQnstruction,

1926,'Se1ia1 No. 152,567. Divided and this 26,7192?. Serial No. 186,604.

' iicaticn and, illustrated in application led April combination and arrangement of partswhich will be fully set forth in the following specithe accompanying drawing, in which Figure l is a vertical section, with parts shown in elevation of a boiler of improved Vconstruction with the connections .forming part of the present invention,

Figure 2 is an enlarged fragmentary sec-` tional view through a portion of the boiler shell and connection with the parts in the disassembled condition,

Figure 8 is a fragmentary vertical section showing a slight modication, and

lFigure 4 is also a sectional view greatly magnified and taken at one side of the joint,

shown in Figure 3.

Referring more particularly to the drawings 5 designates the boiler shell of cylindrical or other form having the heads 8 and 9. rivets 1l being employed to pass through the overlapped parts for securing the heads to the boiler.

The heads 8 and 9 are centrally perforated and provided with an out-turned flange. 2O

adapted to be received into the annular chan- ,nels 21 in the inner sides of the nuts 22 provided with the internal screw threads 23 to co-operate with the external threads 24C upon the intermediate body portion of the spud or connection indicated generally -at k25. f The spuds 25 are provided with theilanges 26 preferably of wedge form in cross section 'and havingtheir outer free ends tapered to substantially an edge. Such flanges 26 Aare adapted'tovbe received into the cavities provided'vby outwardly offsetting the central portions (27* of the headsabout the openings ythrough"whichthe spuds4 pass, andthe inclined inner walls 28 of the flanges 2Q cooperate with the opposite 'mutually inclined ywalls the depressiorisk to yprovide substantial 'spaces for Yreceivingabody of solder 29 useful'tonbindthe spud to the boiler head and also to makea tight and leak proof joint. The nut 22 will bind I.a'portionfof the head nextthe'fiange 20against the/flange 26of thespudconnection yand. will thus form a tight titbetween these parts, andthe engagement of the flange 20 itself in the groove 21 i provides for receivingan external pipe con-V of the nut Will further contribute to form aV tight joint. f

If desired, when the assembly of the parts has been performed andbefore the nut 22 has been tightened to any great extent solder may be flowed into the depressionh referred to and, due to the looseness of the parts, it will i'ind its way downy to Athe space at the inner side of the flange 2O and vvill also creep Viol into the channel 2l'Mof-tli'e nut -v The nutinay be tightened before the solder sets.v The body 29 of the solder on the interiorforms also a smooth joint With adjoining parts of the. boiler head andspud connection.

InV Figure l the top spud is shown as carrying the internal pipe 30 While the spud also nectio'n. 'ln-this instance the :body of the v spud is invade of .substantially the samediani- `eter and the intermediate'threads 24v are conl tinuedl upwardly vto the end of the spud.

Y1 In the case ofthe loiver spud7 Which is also more particularly illustrated in Figure 2, the inner portion of-such Spud is Ofgreater diameter than .the lower portion 31, there less sweeping curve to provide the flange,y 20a,

which extends about the opening through lWhich the spud connection25a is inserted.

The nut22a is of substantially ythe saine construction having the ohannel2laL to receive fthe `Vouter. annularend ofthe flange 20a.

engages the external threads. uponA the spud The -nut 25a. Such spud is also of lmodified construction in that its inner portiond is arranged to'be bent against the adjacent portionofthel ,head 9a'orflange-20l.' TheoriginalpQsitOn `of the end134eis showneat 34a in dotted lines.

After assembly, and when abody offsolder 35 has been V,flowed intov thecavity vbetween the Vspud connection andA the flange 20, fthe -inner 'end 34 of the spud is bent over, as by rollingto ,the position, shown, .infull lines, whereupon the body of solder isshovedtight- Vly between the parts referred ton and {down- Wardly against. the nut' faoeand also possibly intol the ehannel2lthus formi-ng .a *tightl .joint betweenk the y threads,` and -fbetvveen the 4channeled and 'flanged parts. Provision is made for` holdingwa substantial body l:ofthe .solder inorder to'radd stre'lngthlto the A,construction. In assembling the parts,r tlie Work done upon, the spud joint ast-o assemblingit A ner.

be flowed into the depression 27. When the depression is uppermost for this purpose and when access can be easily had to the same. After the yspud connections are in place the heads may be united With the boiler and the reinforcing bands 16 and 17.' sweated or otherwise putin place. The-boiler isvjthen ready for use and When installed the pipe connections vvill be fitted thereto inthe usual inan- I have illustrated and described a preferred vand satisfactory embodiment of my invention, but itis obvious that ohangesrniay be Inadetherein Within Vthe"spiritand scope thereof as-deflned in the appended claims.

VVha-t isclaimed is f 1- A boiilerrconnetion cQmprisi-na. 111,169,111- bination with a boiler having an. ,opening "With anouteturnedtlange, Spud connection y to'said boiler, and anut uponthespudconnection ,andy having a kchannel spaced from the threaded openingaof the nutfar receiving said flange. Y l.

- 2. lnconibnation Withga boilerhead, having an ,outwardly pressedwall.seQti-on yprovidedivitli an opening therethrouglnn Spud having a tubular body-of-appreeiably-less external diameterl than saidopeiiing foizvlloose insertion theretlirough.` and said `spudwvlfaill having a surrounding yradially Atapering Aflange to seat againstiztheilner face of said outwardly pressed .vvallsectionj la -bodyfiof joint formingnnetal fill-ing tlielintV-erinal space Vprovided i by said outwardly A..-} resse d. .-Wall .section v.and overlying .the tapering; iange Aon I.-

.the .spud' Wall Atoseal the `latter-agairistr the boilerhead, la inutthreaded lupontliegspud exteriorly V of the lboiler 1head,l andA vsaid Lnut .and the Wall .of the boiler head- .being provided .with cofacting means tof preventyradial l displacement of `,the ,spudffrelat-ive .tosaid Opening y y ln testimony thatzl claimtlieforegoing as my. invention, I have -signedsinygnanieliereto.

VALENTIN 

